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Atoms and the periodic table review Flashcards | StudBud
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Atoms and the periodic table review
Atoms and the periodic table review
20 terms
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Review quiz/game for atoms, periodic table, and moles.
Flashcards
20 cards
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Practice quiz
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Questions
20
Answers
1
Isotopes are atoms of an element that have the same number of ___ but a differing number of ___
neutrons, protons
protons, neutrons
protons, electrons
electrons, protons
2
An isotope has a mass of 32g and a half-life of 5.00 min. How many grams remain after 30 min?
0.125g
0.25g
1.00g
0.500 g
3
Where is most of the atom's mass found?
Energy Levels
Empty Space
The Nucleus
Electron Cloud
4
What scientist used the gold foil experiment to determine that the nucleus existed?
Bohr
Rutherford
Loos
Dalton
5
A halogen in group 4 is
Tellurium
Bromine
None of these
Iodine
6
A photon of light is emitted when...
An electron jumps to a higher energy level
An electron drops to a lower energy level
An ion becomes excited
An ion leaves the ground state
7
How does an atom become a cation?
gain protons
lose protons
gain electrons
lose electrons
8
What scientist used a cathode ray tube to help discover electrons?
Thompson
Bohr
Rutherford
Heisenberg
9
What is the electron configuration of
Mg
2+
?
1s22s22p6
1s22s22p63s2
1s22s22p63s23p2
1s22s22p63s4
10
How many moles are in 2.0g of helium?
3.0 x 1023 moles
2.0 moles
0.50 moles
4.0 moles
11
What element has two full electron energy levels and 2 electrons in its valence shell?
Be
Mg
C
Na
12
An alkali metal in period 3 is...
Sulfur
Magnesium
Chlorine
Sodium
13
Which
subatomic particle(s)
has
/
have a mass of about 1 AMU?
Protons
Neutrons
Electrons
Protons + Neutrons
14
What is the Atomic Number of the atom represented in this graphic?
5
35
30
65
15
How many negative subatomic particles are in an atom of lead?
125
207.2
207
82
16
Moving left to right in period three, atomic radius
Increases
Decreases
17
Which Subatomic Particle determines the element the atom is?
Nucleus
Electrons
Neutrons
Protons
18
Select the LARGEST atom/ion out of these species:
Ar
Ca2+
K+
S2-
19
Top to bottom on the periodic table, ionization energy:
Decreases
Increases
20
An atom emits a beta particle. What is true of the atomic number of the daughter atom?
Mass number decreases by 2
Aromic number decreases by 2
Atomic number decreases by 1
Atomic number increases by 1
